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LIPID MAPS (Lipid Metabolites and Pathways Strategy) is a web portal designed to be a gateway to Lipidomics resources. The resource has spearheaded a classification of biological lipids, dividing them into eight general categories. [1] LIPID MAPS provides standardised methodologies for mass spectrometry analysis of lipids, e.g. [2] [3] [4]
Examples of various lipid species. Lipidomics is the large-scale study of pathways and networks of cellular lipids in biological systems. [1] [2] [3] The word "lipidome" is used to describe the complete lipid profile within a cell, tissue, organism, or ecosystem and is a subset of the "metabolome" which also includes other major classes of biological molecules (such as amino acids, sugars ...
Lipid metabolism is the synthesis and degradation of lipids in cells, involving the breakdown and storage of fats for energy and the synthesis of structural and functional lipids, such as those involved in the construction of cell membranes. In animals, these fats are obtained from food and are synthesized by the liver. [1]
Pathways are required for the maintenance of homeostasis within an organism and the flux of metabolites through a pathway is regulated depending on the needs of the cell and the availability of the substrate. The end product of a pathway may be used immediately, initiate another metabolic pathway or be stored for later use.
Example of a triacylglycerol. Lipolysis / l ɪ ˈ p ɒ l ɪ s ɪ s / is the metabolic pathway through which lipid triglycerides are hydrolyzed into a glycerol and free fatty acids. It is used to mobilize stored energy during fasting or exercise, and usually occurs in fat adipocytes.
Insulin is a peptide hormone that is critical for managing the body's metabolism. Insulin is released by the pancreas when blood sugar levels rise, and it has many effects that broadly promote the absorption and storage of sugars, including lipogenesis. Insulin stimulates lipogenesis primarily by activating two enzymatic pathways.
Some examples of successful metabolic engineering are the following: (i) Identification of constraints to lysine production in Corynebacterium glutamicum and insertion of new genes to relieve these constraints to improve production [7] (ii) Engineering of a new fatty acid biosynthesis pathway, called reversed beta oxidation pathway, that is ...
Oxylipins constitute a family of oxygenated natural products which are formed from fatty acids by pathways involving at least one step of dioxygen-dependent oxidation. [1] These small polar lipid compounds are metabolites of polyunsaturated fatty acids (PUFAs) including omega-3 fatty acids and omega-6 fatty acids.